New Member and New Owner of a 105! Happy to be here!

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Joined
Aug 6, 2024
Threads
6
Messages
17
Location
Australia
G'day all,

I've just bought my first 105, a 1999 turbo 1hz auto model with 398,000kms.

I have always loved the idea of owning a 1hz vehicle and I generally prefer 4x4 vehicles to be automatic, so when this came up I knew i had to look. I've test driven a naturally aspirated 1HZ auto 105 before and it was so slow going up hills that I was worried the cylinders lacked compression, though it may just be par for the course with the NA 1HZ.

This model has a few tasteful upgrades including:

- Safari snorkel
- Steel bull bar
- Tow bar
- DTS Turbo 9 PSI
- 2¾" exhaust.
- 16" Mag wheels
- 2 Bar Roofrack System
- Commando Superduty 4x4 Shocks
- King Springs (2" Suspension lift ?)

AND it can handle a hill! It wasnt quite as zippy as the 2uz that i tested a few months back but it definitely felt a lot better than i expected. I am hoping that the turbo is low enough to not destroy the engine or the transmission. I have been told that the following work has been done in the past few years:

- Turbo replaced
- Valve set on engine
- Resealing of intake manifold and exhaust manifold
- Front and rear 40mm gas shocks.

it still needs a few things- I want 33s (or 285s,305s or similar), apparently power steering is leaking and the steering damper needs to be replaced. Brakes may need some attention.

hoping to get any and all advice available, and look forward to being a contributing
member of this great community!

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Welcome aboard!

Suggestion 1: Install a pre-turbo EGT gauge/pyrometer. Don't settle for Post-Turbo as most shops will encourage. It's easier but completely inaccurate. Boost isn't your enemy, EGT is. Keep it and coolant temperature under control and your 1HZ will be happy.

Suggestion 2: Install a boost gauge. Keep an eye on it and the EGT gauge and you'll get a good handle on what your engine is doing in various situations.

Suggestion 3: Get a transmission temperature gauge, wholesale automatics do a kit from memory. As per 1 and 2, keep an eye on them and you'll learn how to drive, being mindful that high rpm, reduced load will reduce your EGT, but most likely increase ATF temperature. While you're ordering from wholesale, an upgraded transmission cooler isn't a bad idea either.
 
Beautiful truck! I love my 100 with the 2UZ, but I’ve wanted a 105 for a long time. Congratulations.
Thank you sir. I love 2UZ, one of these days I will buy an LX 470 :)

The previous owner has had this 105 for 22 years, so I can rest assured knowing that it has been loved.

It's amazing how much the engine in my 105 looks like a 1HD-T rather than a 1HZ-T
 

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